funchords
Hello
Premium,MVM
join:2001-03-11
Washington, DC
 ·Verizon Online DSL
 ·Skype
1 edit | reply to abcstore
Re: Comcast is using Sandvine to manage P2P Connections
You are about 100 miles from Warrenton ... hmmm, no explanation.
I'm wondering if something in the FreeBSD setup might be squelching you -- maybe a MPLS rule or a NAT table limitation working against you? Can you plug directly into the cable modem and test?
What Comcast is doing in most areas (the non-trial areas) should have no effect on DNS or web surfing. It would kill seeding, however, by throwing TCP RST packets at your connections. |
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abcstore
See Store For Details
Premium
join:2001-12-21
Richmond, VA
clubs:
| reply to funchords
said by funchords  :Do your packets go through Warrenton? (can you check via traceroute?) If so, it is very, very important that you report this to Comcast tech support and let them know that you are in their Network Management test market. Please let me know. See » www.comcast.net/terms/network/ for (sketchy) details. Test market or no, your results are pretty surprising. So is it any amount of seeding that kills everything? Can you turn it down to 5 KB/s (40 kbps) or 1 KB/s (8 kbps) and still be prevented?
3 6 ms 6 ms 6 ms ge-3-1-ur01.chesterfield.va.richmond.comcast.net [68.86.17 4.185]
4 4 ms 6 ms 6 ms te-1-2-ar01.chesterfield.va.richmond.comcast.net [68.86.17 2.70]
5 13 ms 12 ms 13 ms te-4-3-cr01.charlotte.nc.cbone.comcast.net [68.86.72.133]
6 19 ms 15 ms 17 ms te-1-1-cr01.richmond.va.cbone.comcast.net [68.86.68.110]
7 15 ms 17 ms 16 ms te-1-1-cr01.mclean.va.cbone.comcast.net [68.86.68.114]
8 18 ms 20 ms 20 ms te-4-2-ar01.newcastle.de.bo.comcast.net [68.86.72.162]
9 21 ms 23 ms 21 ms te-1-1-ar02.ndceast.pa.bo.comcast.net [68.86.228.102]
10 22 ms 21 ms 20 ms te-4-1-ur02.ndceast.pa.bo.comcast.net [68.86.134.49]
11 21 ms 21 ms 21 ms 68.87.98.12
12 20 ms 21 ms 19 ms 68.87.60.144
Seeding at 5Kb/s I can't even reply to this thread... Neither could I open the link you provided.
ABC
P.S. Boy, am I glad FIOS finally got to my house! 15Mbit and no throttling
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This signature is NOT for sale! |
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funchords
Hello
Premium,MVM
join:2001-03-11
Washington, DC
·Verizon Online DSL
·Skype
1 edit | reply to abcstore
Do your packets go through Warrenton? (can you check via traceroute?)
If so, it is very, very important that you report this to Comcast tech support and let them know that you are in their Network Management test market. Please let me know.
See »www.comcast.net/terms/network/ for (sketchy) details.
Test market or no, your results are pretty surprising. So is it any amount of seeding that kills everything? Can you turn it down to 5 KB/s (40 kbps) or 1 KB/s (8 kbps) and still be prevented?
--
Robb Topolski -= funchords.com =- Hillsboro, Oregon
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abcstore
See Store For Details
Premium
join:2001-12-21
Richmond, VA
clubs:
| reply to funchords
My router is a FreeBSD handling multiple T1s and MPLS lines. 6/2Mbit cable line is a tiny fraction of what's going on.
At times you can seed and browse but 99% of the time seeding kills everything (through cable).
ABC
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NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC
1 edit | reply to abcstore
said by abcstore :Having upload set to 28_k_bit on a 8/2Mbit pipe kills the whole thing almost completely. No ping, no DNS, no surfing. I've only got 3/0.5 Mb/s, but letting the upload run at 39 kB/s (yes, that's Bytes!) does not hurt DNS, or surfing. Ping only suffers slightly. The worst effect is on streaming video (gets very choppy).
It helps that the router (D-Link DIR-655) does QoS, and the DSL modem (SpeedStream 4100) performs ACK packet prioritization.
P.S. I normally run the upload throttled back to 29 kB/s.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum |
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funchords
Hello
Premium,MVM
join:2001-03-11
Washington, DC
·Verizon Online DSL
·Skype
1 edit | reply to abcstore
said by abcstore :Having upload set to 28_k_bit on a 8/2Mbit pipe kills the whole thing almost completely. No ping, no DNS, no surfing. Are you working through a router? If so, try disabling DHT in your P2P client and close it. Reset your router (power off and on), wait for a few moments, then restart your bittorrent client.
If that helps, your router cannot handle the high number of connections that DHT creates. Turning DHT off shouldn't affect you badly, as DHT's main purpose is to function as a backup tracker.
--
Robb Topolski -= funchords.com =- Hillsboro, Oregon
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abcstore
See Store For Details
Premium
join:2001-12-21
Richmond, VA
clubs:
1 edit | reply to NormanS
said by NormanS :said by italiansmoke :I have my torrent upload speed set at 15kb/s. That should work for alleviating surfing issues. Having upload set to 28_k_bit on a 8/2Mbit pipe kills the whole thing almost completely. No ping, no DNS, no surfing.
ABC |
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ajax25
join:2003-12-10
Colonia, NJ
| reply to ajax25
said by ajax25 :As of last night 9 downloaders at 90.7%. Nothing moving. I was able to connect to one of the seeders after stopping and restarting the torrent. Only 16K of data got through, but I was able to confirm that that seeder was on comcast. This baby is still hanging at around 95%. Still two
seeders, one I know is comcast.
There is also a second torrent hung in the upper 90%
range, have not been able to see the seeder for that one.
If the seeder does connect they get kicked very fast.
I'm in NJ if that makes any difference. |
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goody two
@sbcglobal.net | reply to funchords
Psst. I was being just as humorous as Sturm was. But enough has been said. |
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funchords
Hello
Premium,MVM
join:2001-03-11
Washington, DC | reply to goody two
Good grief! Are there cross-linked topics somewhere or has this "delay the payments" joke actually spun this far off-topic? |
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funchords
Hello
Premium,MVM
join:2001-03-11
Washington, DC
·Verizon Online DSL
·Skype
| reply to italiansmoke
said by italiansmoke :I have my torrent upload speed set at 15kb/s. I thought upload was the speed you alloted to seeding. Is there any other benefit to using a higher upload speed? Does it improve your download speed? Yes. The BitTorrent is a tit-for-tat protocol that links the best sharers (uploaders) together for the fastest transfers. If you're only running 1 torrent at a time, 15 KB/s is plenty. I wouldn't run more than 2 torrents at a time on a Comcast connection, and with 2 torrents you'd want to set your upload limit to around 30 KB/s (explanation: it works out to 3 slots per upload, 5 KB/s per slot). During prime-time, I would (and did) run only 1 torrent at 15 KB/s.
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Robb Topolski -= funchords.com =- Hillsboro, Oregon
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Pizz
Hi
join:2000-10-27
Astoria, NY
·Verizon Online DSL
 ·RoadRunner Cable
| reply to funchords
I would just personally switch over to DSL if you plan on doing alot of P2P or Torrent traffic. It's been made perfectly clear by MSOs - that no way in hell we're going to accommodate those type of users on it's network.
Maybe when docsis 3.0 hits - but currently, dont use P2P and Torrent sites so much. |
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NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC
| reply to italiansmoke
said by italiansmoke :I have my torrent upload speed set at 15kb/s. That should work for alleviating surfing issues.
I thought upload was the speed you alloted to seeding. Is there any other benefit to using a higher upload speed? Does it improve your download speed?
I have never noticed any improvement in download speed with higher upload; but I have only used public trackers, and I suspect that any benefit would only apply to private trackers.
My nominal DSL upload is 512kbps, but there is a 15% overhead, so actual speed is closer to 425kbps. AT&T does not "overprovision", as some other ISPs do. Because of my nominal UL, uTorrent pegs my max upload at 43kB/s. By rough calculation, I estimate that it is closer to 39kB/s. Because saturating the upload bandwidth has an adverse affect on other Internet activity, it is usually advisable to throttle upload instead of running at the maximum. However, most of the adverse effects are due to packet contention. Delaying outbound ACK packets, which happens on a saturated upload, slows web surfing, and the like.
My modem, as I have stated, reportedly prioritizes outbound ACK packets, over other outbound packets, which would also alleviate the effects of upload congestion. And, in addition, my D-Link DIR-655 has some kind of QoS algorithm. The result is that I don't suffer the ill effects of upload saturation as severely as would be the case with no QoS of any kind.
Other than completing the unity ratio expected of BT P2P faster, I can't think of any reason for faster upload. I think funchords has suggested that, even for DSL connections, which are better able to handle P2P bandwidth demand, that throttling back is "kinder" to the network. While the 29kB/s that I am using is probably a killer on a cable plant, it doesn't seem so hard on DSL. However, if funchords were to suggest that I should cut back to 66% (26kB/s), instead of my current 75% (29kB/s), I'd do it. As a member of a larger community, I should minimize any adverse impact my activity would have on other members of the community.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum |
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italiansmoke
join:2005-07-21
Monroe, MI
1 edit | reply to goody two
reply to NormanS:
I have my torrent upload speed set at 15kb/s.
I thought upload was the speed you alloted to seeding. Is there any other benefit to using a higher upload speed? Does it improve your download speed? |
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goody two
@sbcglobal.net
1 edit | reply to sturmvogel
There's no contradiction at all between the two paragraphs, and I've been in management position in commercial lending for 20 years where I've dealt with plenty of different commercial clients. I've worked at banks and finance companies and have have to give warnings to employees who have had poor performance and let go the ones who didn't. Pay cuts were not given, since employees should be given an opportunity to improve. If they can't improve, pay cuts won't cover the deficiencies; instead, you hire other people who can perform to replace the ones who aren't.
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sturmvogel
Obama '08
join:2008-02-07
Houston, TX
1 edit | reply to goody two
said by goody two :
Pay cuts are just that, not delays, as employees won't get back the reduced amount.
The reality is that in general poorly performing employees get warnings and eventually get fired if improvements are not made.
Your two paragraphs contradict each other.
--
Treason is a matter of dates |
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italiansmoke
join:2005-07-21
Monroe, MI | reply to NormanS
I have my torrent upload speed set at 15kb/s.
I thought upload was the speed you alloted to seeding. Is there any other benefit to using a higher upload speed? Does it improve your download speed? |
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goody two
@sbcglobal.net
1 edit | reply to sturmvogel
Pay cuts are just that, not delays, as employees won't get back the reduced amount.
The reality is that in general poorly performing employees get warnings and eventually get fired if improvements are not made. |
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NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC
| reply to TheSaint
said by TheSaint :Comcast seems to be cutting off bit torrent traffic on private trackers, or at least in this area. I've just signed up for Comcast HSI. Speedtest.net and the like all come out with decent speeds, but whenever I use a private tracker the connections keep on resetting. Not having used private trackers on a Comcast connection, I can't directly address that. But, in order to distinguish between public and private trackers, Comcast would have to take the time to build up a database of which trackers are public, and which are private. A rather costly, and, thus, unlikely activity on the part of Comcast. Without that knowledge, how would the Sandvine appliance distinguish between the two?
Public trackers seem to work just fine with upload and download. What is worse than just the private trackers not working, I've noticed that when utorrent is running webpages also take MUCH, MUCH, longer to resolve.
Having used my sister's Comcast connection to download fansubbed anime, I can assure you that my usage never adversely affected my sister, or her family. The thing is, I was always "upload impaired" with uTorrent while working her connection. I never pestered my brother-in-law about poking holes through his NAT appliance. I just downloaded until complete, but kept the tracker until I could return to my DSL connection and seed until reaching 1.050 (which is where I have set uTorrent to automatically stop uploading).
BTW, on my DSL connection, I used to throttle upload way back (maybe half, or so), when I had a standard, bridged DSL modem. I have since replaced that with a SpeedStream 4100 DSL modem, which, reportedly, performs outbound ACK packet prioritization. And added a D-Link DIR-655, with the default QoS setting. Although my connection theoretically can sustain 39kB/s upload, I still throttle it back. I have uTorrent set for 29kB/s upload.
I would strongly advise you to consider the advice of funchords . He knows way more about how this stuff works than I do, and way more about how cable (in general) and Comcast (in particular) work.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum |
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sturmvogel
Obama '08
join:2008-02-07
Houston, TX
1 edit | reply to goody two
said by goody two :said by sturmvogel :said by goody two :Yeah, using that logic, employers should delay paychecks if employees are late with their reports or projects or slow with customer service. Brilliant logic once again.  And they do, it is called performance evaluation and corresponding compensation. Let's keep our on the ball here. We were talking about delaying, not adjusting, payments. Performance evaluation/corresponding compensation do not result in delaying pay checks. If performance is not satisfactory, an employee could be put on a developmental plan with or without a temporary pay cut until the performance improves. When the performance improves, the full pay rate is applied.
I guess it is a delay oy payments.
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Treason is a matter of dates |
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